you need to test the multi switch the harness connection is 3/4 down the steering column under dash --as to fuse and relay if hazards still work --on same fuse so not fuse
Your local library has online access to most service manuals that you would have to pay for. Many time you can get access to them through their website if you have a library card. If not, go the library and get full free access to all the major car service manuals for free!